| Actinium Atomic Structure   
	
		| Number of Energy Levels: | 7 |  
		| First Energy Level: | 2 |  
		| Second Energy Level: | 8 |  
		| Third Energy Level: | 18 |  
		| Fourth Energy Level | 32 |  
		| Fifth Energy Level | 18 |  
		| Sixth Energy Level | 9 |  
		| Seventh Energy Level | 2 |  
 
 
 Graphic courtesy ofChemicalElements.com
 |